Toposhaw Watershed Structure Y-27-15 Dam Reservoir Report
Nearby: Topashaw Farms Dam Ms05153 Lake Dam
Last Updated: December 6, 2025
The Toposhaw Watershed Structure Y-27-15 Dam, also known as the Shelton Dam, is a local government-owned earth dam located in Grenada, Mississippi.
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Summary
Designed by the USDA NRCS and completed in 1974, this dam plays a crucial role in flood risk reduction along the Toposhaw Creek. With a dam height of 8 feet and a storage capacity of 194 acre-feet, the structure is regulated and inspected by the Mississippi Department of Environmental Quality to ensure its safety and functionality.
Despite being classified as having a low hazard potential, the Toposhaw Watershed Dam serves as a vital component of the region's water resource management. The dam's uncontrolled spillway and outlet gates help to regulate water flow during periods of high discharge, contributing to the overall flood risk reduction efforts in the area. With a moderate risk assessment rating of 3, ongoing risk management measures are in place to address any potential concerns and ensure the dam's continued effectiveness in protecting the surrounding communities.
As part of the Mobile District of the USACE, the Toposhaw Watershed Structure Y-27-15 Dam exemplifies the collaboration between federal and state agencies in safeguarding water resources and mitigating climate-related challenges. Its role in managing water flow, reducing flood risks, and maintaining environmental quality highlights the importance of sustainable infrastructure in addressing the impacts of climate change on local communities.
Year Completed |
1974 |
Dam Height |
8 |
River Or Stream |
TR- TOPOSHAW CREEK |
Primary Dam Type |
Earth |
Drainage Area |
0.35 |
Nid Storage |
194 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
8 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Skuna River At Bruce
|
71cfs |
Batupan Bogue At Grenada
|
98cfs |
Yalobusha River At Grenada
|
2960cfs |
Catalpa Creek At Mayhew
|
2940cfs |
Tombigbee River At Aberdeen Lock And Dam
|
121cfs |
Otoucalofa Creek Canal Nr Water Valley
|
25cfs |
Dam Data Reference
Condition Assessment
SatisfactoryNo existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.
Hazard Potential Classification
HighDams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.
Toposhaw Watershed Structure Y-27-15 Dam